I'm no expert, but the Italian music from my childhood ("pop" music from Italy) certainly didn't relate to Doo Wop. I think it's a New York thing, and there just happened to be plenty of Italian kids in New York to grab it and develop it on the streets. And yes, I also think that it grew out of listening to groups like the Four Aces, etc. and putting their own spin on that stuff. Just my guess..